public class testUpdateOwner  {

    static testMethod void testUpdateOwner  () {
    
        OutletMonthlyOfftake__c out = new OutletMonthlyOfftake__c();
        Account acc = [Select id From Account limit 1];
        Product2 p = [Select id From Product2 limit 1];
        out.OutletName__c = acc.id;
        out.ProductName__c = p.id;
        insert out;
    }
    
}